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VSphereHelper.py
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VSphereHelper.py
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#!/usr/bin/env python
# Copyright 2011 Jonathan Kinred
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy
# of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import re
import sys
import time
import os
import pycurl
import logging
import urllib.request, urllib.error, urllib.parse
from psphere.client import Client
from psphere.errors import TemplateNotFoundError
from psphere.soap import VimFault
from time import sleep, time
logging.getLogger('suds').setLevel(logging.INFO)
class VSphereHelper:
def __init__(self, url, username, password):
self.log = logging.getLogger('%s.%s' % (__name__, self.__class__.__name__))
if(url.startswith('http://') or url.startswith('https://')):
server = urllib.request.Request(url).get_host()
else:
server = url
self.client = Client(server=server, username=username, password=password)
def curl_progress(self, download_t, download_d, upload_t, upload_d):
curtime=time()
# TODO: Make poke frequency variable
# 5 seconds isn't too much and it makes the status bar in the vSphere GUI look nice :-)
if (curtime - self.time_at_last_poke) >= 5:
self.lease.HttpNfcLeaseProgress(percent = int(upload_d*100/upload_t))
self.time_at_last_poke = time()
def create_vm(self, imagefilename, name, compute_resource, datastore, disksize, nics,
memory, num_cpus, guest_id, host=None):
"""Create a virtual machine using the specified values.
:param name: The name of the VM to create.
:type name: str
:param compute_resource: The name of a ComputeResource in which to \
create the VM.
:type compute_resource: str
:param datastore: The name of the datastore on which to create the VM.
:type datastore: str
:param disksize: The size of the disk, specified in KB, MB or GB. e.g. \
20971520KB, 20480MB, 20GB.
:type disksize: str
:param nics: The NICs to create, specified in a list of dict's which \
contain a "network_name" and "type" key. e.g. \
{"network_name": "VM Network", "type": "VirtualE1000"}
:type nics: list of dict's
:param memory: The amount of memory for the VM. Specified in KB, MB or \
GB. e.g. 2097152KB, 2048MB, 2GB.
:type memory: str
:param num_cpus: The number of CPUs the VM will have.
:type num_cpus: int
:param guest_id: The vSphere string of the VM guest you are creating. \
The list of VMs can be found at \
http://www.vmware.com/support/developer/vc-sdk/visdk41pubs/ApiReference/index.html
:type guest_id: str
:param host: The name of the host (default: None), if you want to \
provision the VM on a \ specific host.
:type host: str
"""
# Convenience variable
client = self.client
self.log.debug("Creating VM %s" % name)
# If the host is not set, use the ComputeResource as the target
if host is None:
target = client.find_entity_view("ComputeResource",
filter={"name": compute_resource})
resource_pool = target.resourcePool
else:
target = client.find_entity_view("HostSystem", filter={"name": host})
resource_pool = target.parent.resourcePool
disksize_pattern = re.compile("^\d+[KMG]B")
if disksize_pattern.match(disksize) is None:
raise Exception("Disk size %s is invalid. Try \"12G\" or similar" % disksize)
if disksize.endswith("GB"):
disksize_kb = int(disksize[:-2]) * 1024 * 1024
elif disksize.endswith("MB"):
disksize_kb = int(disksize[:-2]) * 1024
elif disksize.endswith("KB"):
disksize_kb = int(disksize[:-2])
else:
raise Exception("Disk size %s is invalid. Try \"12G\" or similar" % disksize)
memory_pattern = re.compile("^\d+[KMG]B")
if memory_pattern.match(memory) is None:
raise Exception("Memory size %s is invalid. Try \"12G\" or similar" % memory)
if memory.endswith("GB"):
memory_mb = int(memory[:-2]) * 1024
elif memory.endswith("MB"):
memory_mb = int(memory[:-2])
elif memory.endswith("KB"):
memory_mb = int(memory[:-2]) / 1024
else:
raise Exception("Memory size %s is invalid. Try \"12G\" or similar" % memory)
# A list of devices to be assigned to the VM
vm_devices = []
# Create a disk controller
controller = self.create_controller("VirtualLsiLogicController")
vm_devices.append(controller)
ds_to_use = None
for ds in target.datastore:
if ds.name == datastore:
ds_to_use = ds
break
if ds_to_use is None:
raise Exception("Could not find datastore on %s with name %s" %
(target.name, datastore))
# Ensure the datastore is accessible and has enough space
if ds_to_use.summary.accessible is not True:
raise Exception("Datastore (%s) exists, but is not accessible" %
ds_to_use.summary.name)
if ds_to_use.summary.freeSpace < disksize_kb * 1024:
raise Exception("Datastore (%s) exists, but does not have sufficient"
" free space." % ds_to_use.summary.name)
disk = self.create_disk(datastore=ds_to_use, disksize_kb=disksize_kb)
vm_devices.append(disk)
cdrom = self.create_cdrom(datastore=ds_to_use)
vm_devices.append(cdrom)
for nic in nics:
nic_spec = self.create_nic(target, nic)
if nic_spec is None:
raise Exception("Could not create spec for NIC")
# Append the nic spec to the vm_devices list
vm_devices.append(nic_spec)
vmfi = client.create("VirtualMachineFileInfo")
vmfi.vmPathName = "[%s]" % ds_to_use.summary.name
vm_config_spec = client.create("VirtualMachineConfigSpec")
vm_config_spec.name = name
vm_config_spec.memoryMB = memory_mb
vm_config_spec.files = vmfi
vm_config_spec.annotation = "Auto-provisioned by psphere"
vm_config_spec.numCPUs = num_cpus
vm_config_spec.guestId = guest_id
vm_config_spec.deviceChange = vm_devices
# Find the datacenter of the target
if target.__class__.__name__ == "HostSystem":
datacenter = target.parent.parent.parent
else:
datacenter = target.parent.parent
importspec = client.create('VirtualMachineImportSpec')
importspec.configSpec = vm_config_spec
importspec.resPoolEntity = None
lease = resource_pool.ImportVApp(spec = importspec, folder = datacenter.vmFolder)
self.lease = lease
# Lease takes a bit of time to initialize
for i in range(1000):
#print lease.error
if lease.state == "ready":
break
if lease.state == "error":
raise Exception("Our HttpNFCLease failed to initialize")
sleep(5)
lease.update_view_data(properties=["state"])
#print "For debug and general info, here is the lease info"
#pprint(lease.info)
upload_url = None
for url_candidate in lease.info.deviceUrl:
if url_candidate['disk']:
upload_url = str(url_candidate['url'])
if not upload_url:
raise Exception("Unable to extract disk upload URL from HttpNfcLease")
self.log.debug("Extracted image upload URL (%s) from lease" % (upload_url))
lease_timeout = lease.info.leaseTimeout
self.time_at_last_poke = time()
image_file = open(imagefilename)
# Upload the image itself
image_size = os.path.getsize(imagefilename)
curl = pycurl.Curl()
curl.setopt(pycurl.URL, upload_url)
curl.setopt(pycurl.SSL_VERIFYPEER, 0)
curl.setopt(pycurl.POST, 1)
curl.setopt(pycurl.POSTFIELDSIZE, image_size)
curl.setopt(pycurl.READFUNCTION, image_file.read)
curl.setopt(pycurl.HTTPHEADER, ["User-Agent: Load Tool (PyCURL Load Tool)", "Content-Type: application/octet-stream"])
curl.setopt(pycurl.NOPROGRESS, 0)
curl.setopt(pycurl.PROGRESSFUNCTION, self.curl_progress)
curl.perform()
curl.close()
image_file.close()
lease.HttpNfcLeaseComplete()
vm = lease.info.entity
vm.MarkAsTemplate()
def create_nic(self, target, nic):
# Convenience variable
client = self.client
"""Return a NIC spec"""
# Iterate through the networks and look for one matching
# the requested name
for network in target.network:
if network.name == nic["network_name"]:
net = network
break
else:
return None
# Success! Create a nic attached to this network
backing = client.create("VirtualEthernetCardNetworkBackingInfo")
backing.deviceName = nic["network_name"]
backing.network = net
connect_info = client.create("VirtualDeviceConnectInfo")
connect_info.allowGuestControl = True
connect_info.connected = False
connect_info.startConnected = True
new_nic = client.create(nic["type"])
new_nic.backing = backing
new_nic.key = 2
# TODO: Work out a way to automatically increment this
new_nic.unitNumber = 1
new_nic.addressType = "generated"
new_nic.connectable = connect_info
nic_spec = client.create("VirtualDeviceConfigSpec")
nic_spec.device = new_nic
nic_spec.fileOperation = None
operation = client.create("VirtualDeviceConfigSpecOperation")
nic_spec.operation = (operation.add)
return nic_spec
def create_controller(self, controller_type):
# Convenience variable
client = self.client
controller = client.create(controller_type)
controller.key = 0
controller.device = [0]
controller.busNumber = 0,
controller.sharedBus = client.create("VirtualSCSISharing").noSharing
spec = client.create("VirtualDeviceConfigSpec")
spec.device = controller
spec.fileOperation = None
spec.operation = client.create("VirtualDeviceConfigSpecOperation").add
return spec
def create_disk(self, datastore, disksize_kb):
# Convenience variable
client = self.client
backing = client.create("VirtualDiskFlatVer2BackingInfo")
backing.datastore = None
backing.diskMode = "persistent"
backing.fileName = "[%s]" % datastore.summary.name
backing.thinProvisioned = True
disk = client.create("VirtualDisk")
disk.backing = backing
disk.controllerKey = 0
disk.key = 0
disk.unitNumber = 0
disk.capacityInKB = disksize_kb
disk_spec = client.create("VirtualDeviceConfigSpec")
disk_spec.device = disk
file_op = client.create("VirtualDeviceConfigSpecFileOperation")
disk_spec.fileOperation = file_op.create
operation = client.create("VirtualDeviceConfigSpecOperation")
disk_spec.operation = operation.add
return disk_spec
def create_cdrom(self, datastore):
# Convenience variable
client = self.client
# This creates what is essentially a virtual CDROM drive with no disk in it
# Adding this greatly simplifies the process of adding a custom ISO via deltacloud
connectable = client.create('VirtualDeviceConnectInfo')
connectable.allowGuestControl = True
connectable.connected = True
connectable.startConnected = True
#connectable.status = None
backing = client.create('VirtualCdromIsoBackingInfo')
backing.datastore = None
backing.fileName = '[%s]' % datastore.summary.name
cdrom = client.create('VirtualCdrom')
cdrom.connectable = connectable
cdrom.backing = backing
# 201 is the second built in IDE controller
cdrom.controllerKey = 201
cdrom.key = 10
cdrom.unitNumber = 0
cdrom_spec = client.create('VirtualDeviceConfigSpec')
cdrom_spec.fileOperation = None
cdrom_spec.device = cdrom
operation = client.create('VirtualDeviceConfigSpecOperation')
cdrom_spec.operation = operation.add
return cdrom_spec
def delete_vm(self, name):
vm = self.client.find_entity_view("VirtualMachine", filter={"name":name})
if not vm:
raise Exception("Cannot find VM with name (%s)" % (name))
vmdestroy = vm.Destroy_Task()
for i in range(300):
if not (vmdestroy.info.state in ["queued", "running"]):
break
sleep(1)
vmdestroy.update_view_data(properties=["info"])
if vmdestroy.info.state != "success":
# TODO: Return the reason - this is part of the rather complex Task object
raise Exception("Failed to delete VM (%s) in timeout period" % (name))